116 ideas
23890 | For Plato true wisdom is supernatural [Plato, by Weil] |
Full Idea: It is evident that Plato regards true wisdom as something supernatural. | |
From: report of Plato (works [c.375 BCE]) by Simone Weil - God in Plato p.61 | |
A reaction: Taken literally, I assume this is wrong, but we can empathise with the thought. Wisdom has the feeling of rising above the level of mere knowledge, to achieve the overview I associate with philosophy. |
3060 | Plato never mentions Democritus, and wished to burn his books [Plato, by Diog. Laertius] |
Full Idea: Plato, who mentions nearly all the ancient philosophers, nowhere speaks of Democritus; he wished to burn all of his books, but was persuaded that it was futile. | |
From: report of Plato (works [c.375 BCE]) by Diogenes Laertius - Lives of Eminent Philosophers 09.7.8 |
2196 | The observation of human blindness and weakness is the result of all philosophy [Hume] |
Full Idea: The observation of human blindness and weakness is the result of all philosophy. | |
From: David Hume (Enquiry Conc Human Understanding [1748], IV.I.26) | |
A reaction: No wonder some people dislike philosophy. There is no question that the human race is often ludicrously over-confident about its attempts to understand, and a careful examination of the situation tends to undermine such confidence. |
2187 | If we suspect that a philosophical term is meaningless, we should ask what impression it derives from [Hume] |
Full Idea: When we entertain any suspicion that a philosophical term is without any meaning or idea, we need but enquire "from what impression is that supposed idea derived?" | |
From: David Hume (Enquiry Conc Human Understanding [1748], II.17) |
2200 | All experimental conclusions assume that the future will be like the past [Hume] |
Full Idea: All our experimental conclusions proceed upon the supposition that the future will be conformable to the past. | |
From: David Hume (Enquiry Conc Human Understanding [1748], IV.II.30) |
23891 | Two contradictories force us to find a relation which will correlate them [Plato, by Weil] |
Full Idea: Where contradictions appear there is a correlation of contraries, which is relation. If a contradiction is imposed on the intelligence, it is forced to think of a relation to transform the contradiction into a correlation, which draws the soul higher. | |
From: report of Plato (works [c.375 BCE]) by Simone Weil - God in Plato p.70 | |
A reaction: A much better account of the dialectic than anything I have yet seen in Hegel. For the first time I see some sense in it. A contradiction is not a falsehood, and it must be addressed rather than side-stepped. A kink in the system, that needs ironing. |
4636 | All reasoning concerning matters of fact is based on analogy (with similar results of similar causes) [Hume] |
Full Idea: All our reasonings concerning matters of fact are founded on a species of analogy, which leads us to expect from any cause the same events, which we have observed to result from similar causes. | |
From: David Hume (Enquiry Conc Human Understanding [1748], §82) | |
A reaction: Interesting. Analogy notoriously becomes problematical when you have only one case (or a few) to go on, as when inferring other minds, or God's existence from natural design. |
2197 | Reason assists experience in discovering laws, and in measuring their application [Hume] |
Full Idea: Abstract reasonings are employed, either to assist experience in the discovery of natural laws, or to determine their influence in particular instances, where it depends upon any precise degree of distance or quantity. | |
From: David Hume (Enquiry Conc Human Understanding [1748], IV.I.27) |
7700 | We can't think about the abstract idea of triangles, but only of particular triangles [Hume] |
Full Idea: Let any man try to conceive a triangle in general, which is neither Isoceles nor Scalenum, nor has any particular length or proportion of sides; and he will perceive the absurdity of all the scholastic notions with regard to abstraction and general ideas. | |
From: David Hume (Enquiry Conc Human Understanding [1748], XII.II.122) | |
A reaction: I think there is a basic error in this. I admit that I can only imagine a particular triangle, but it doesn't follow that I am thinking about one triangle. Ontology/epistemology confusion. I picture a shape while believing the shape to be irrelevant. |
14502 | Plato's idea of 'structure' tends to be mathematically expressed [Plato, by Koslicki] |
Full Idea: 'Structure' tends to be characterized by Plato as something that is mathematically expressed. | |
From: report of Plato (works [c.375 BCE]) by Kathrin Koslicki - The Structure of Objects V.3 iv | |
A reaction: [Koslicki is drawing on Verity Harte here] |
13602 | We cannot form an idea of a 'power', and the word is without meaning [Hume] |
Full Idea: We can have no idea of connexion or power at all, and these words are absolutely without any meaning. | |
From: David Hume (Enquiry Conc Human Understanding [1748], 7.2.58) | |
A reaction: I would say that this ignores a phenomenon of which Hume is well aware, which is the power of our own minds to generate thoughts and actions. Hume seems to be employing a verificationist theory of meaning |
17948 | Plato's Forms meant that the sophists only taught the appearance of wisdom and virtue [Plato, by Nehamas] |
Full Idea: Plato's theory of Forms allowed him to claim that the sophists and other opponents were trapped in the world of appearance. What they therefore taught was only apparent wisdom and virtue. | |
From: report of Plato (works [c.375 BCE]) by Alexander Nehamas - Eristic,Antilogic,Sophistic,Dialectic p.118 |
20906 | Platonists argue for the indivisible triangle-in-itself [Plato, by Aristotle] |
Full Idea: The Platonists, on the basis of purely logical arguments, posit the existence of an indivisible 'triangle in itself'. | |
From: report of Plato (works [c.375 BCE]) by Aristotle - Coming-to-be and Passing-away (Gen/Corr) 316a15 | |
A reaction: A helpful confirmation that geometrical figures really are among the Forms (bearing in mind that numbers are not, because they contain one another). What shape is the Form of the triangle? |
3039 | When Diogenes said he could only see objects but not their forms, Plato said it was because he had eyes but no intellect [Plato, by Diog. Laertius] |
Full Idea: When Diogenes told Plato he saw tables and cups, but not 'tableness' and 'cupness', Plato replied that this was because Diogenes had eyes but no intellect. | |
From: report of Plato (works [c.375 BCE]) by Diogenes Laertius - Lives of Eminent Philosophers 06.2.6 |
556 | If there is one Form for both the Form and its participants, they must have something in common [Aristotle on Plato] |
Full Idea: If there is the same Form for the Forms and for their participants, then they must have something in common. | |
From: comment on Plato (works [c.375 BCE]) by Aristotle - Metaphysics 991a |
563 | If gods are like men, they are just eternal men; similarly, Forms must differ from particulars [Aristotle on Plato] |
Full Idea: We say there is the form of man, horse and health, but nothing else, making the same mistake as those who say that there are gods but that they are in the form of men. They just posit eternal men, and here we are not positing forms but eternal sensibles. | |
From: comment on Plato (works [c.375 BCE]) by Aristotle - Metaphysics 997b |
565 | The Forms cannot be changeless if they are in changing things [Aristotle on Plato] |
Full Idea: The Forms could not be changeless if they were in changing things. | |
From: comment on Plato (works [c.375 BCE]) by Aristotle - Metaphysics 998a |
557 | A Form is a cause of things only in the way that white mixed with white is a cause [Aristotle on Plato] |
Full Idea: A Form is a cause of things only in the way that white mixed with white is a cause. | |
From: comment on Plato (works [c.375 BCE]) by Aristotle - Metaphysics 991a |
9607 | The greatest discovery in human thought is Plato's discovery of abstract objects [Brown,JR on Plato] |
Full Idea: The greatest discovery in the history of human thought is Plato's discovery of abstract objects. | |
From: comment on Plato (works [c.375 BCE]) by James Robert Brown - Philosophy of Mathematics Ch. 2 | |
A reaction: Compare Idea 2860! Given the diametrically opposed views, it is clearly likely that Plato's central view is the most important idea in the history of human thought, even if it is wrong. |
13263 | We can grasp whole things in science, because they have a mathematics and a teleology [Plato, by Koslicki] |
Full Idea: Due to the mathematical nature of structure and the teleological cause underlying the creation of Platonic wholes, these wholes are intelligible, and are in fact the proper objects of science. | |
From: report of Plato (works [c.375 BCE]) by Kathrin Koslicki - The Structure of Objects 5.3 | |
A reaction: I like this idea, because it pays attention to the connection between how we conceive objects to be, and how we are able to think about objects. Only examining these two together enables us to grasp metaphysics. |
13261 | Plato sees an object's structure as expressible in mathematics [Plato, by Koslicki] |
Full Idea: The 'structure' of an object tends to be characterised by Plato as something that is mathematically expressible. | |
From: report of Plato (works [c.375 BCE]) by Kathrin Koslicki - The Structure of Objects 5.3 | |
A reaction: This seems to be pure Pythagoreanism (see Idea 644). Plato is pursuing Pythagoras's research programme, of trying to find mathematics buried in every aspect of reality. |
13265 | Plato was less concerned than Aristotle with the source of unity in a complex object [Plato, by Koslicki] |
Full Idea: Plato was less concerned than Aristotle with the project of how to account, in completely general terms, for the source of unity within a mereologically complex object. | |
From: report of Plato (works [c.375 BCE]) by Kathrin Koslicki - The Structure of Objects 5.5 | |
A reaction: Plato seems to have simply asserted that some sort of harmony held things together. Aristotles puts the forms [eidos] within objects, rather than external, so he has to give a fuller account of what is going on in an object. He never managed it! |
593 | Plato's holds that there are three substances: Forms, mathematical entities, and perceptible bodies [Plato, by Aristotle] |
Full Idea: Plato's doctrine was that the Forms and mathematicals are two substances and that the third substance is that of perceptible bodies. | |
From: report of Plato (works [c.375 BCE]) by Aristotle - Metaphysics 1028b |
13260 | Plato says wholes are either containers, or they're atomic, or they don't exist [Plato, by Koslicki] |
Full Idea: Plato considers a 'container' model for wholes (which are disjoint from their parts) [Parm 144e3-], and a 'nihilist' model, in which only wholes are mereological atoms, and a 'bare pluralities' view, in which wholes are not really one at all. | |
From: report of Plato (works [c.375 BCE]) by Kathrin Koslicki - The Structure of Objects 5.2 | |
A reaction: [She cites Verity Harte for this analysis of Plato] The fourth, and best, seems to be that wholes are parts which fall under some unifying force or structure or principle. |
11237 | Only universals have essence [Plato, by Politis] |
Full Idea: Plato argues that only universals have essence. | |
From: report of Plato (works [c.375 BCE]) by Vassilis Politis - Aristotle and the Metaphysics 1.4 |
11238 | Plato and Aristotle take essence to make a thing what it is [Plato, by Politis] |
Full Idea: Plato and Aristotle have a shared general conception of essence: the essence of a thing is what that thing is simply in virtue of itself and in virtue of being the very thing it is. It answers the question 'What is this very thing?' | |
From: report of Plato (works [c.375 BCE]) by Vassilis Politis - Aristotle and the Metaphysics 1.4 |
2216 | We transfer the frequency of past observations to our future predictions [Hume] |
Full Idea: Where different effects have been found to follow from causes, which are to appearance exactly similar, all these various effects must occur to the mind in the same proportion in transferring the past to the future. | |
From: David Hume (Enquiry Conc Human Understanding [1748], VI.47) |
2215 | There is no such thing as chance [Hume] |
Full Idea: There is no such thing as chance in the world. | |
From: David Hume (Enquiry Conc Human Understanding [1748], VI.46) |
2209 | Belief is stronger, clearer and steadier than imagination [Hume] |
Full Idea: Belief is nothing but a more vivid, lively, forcible, firm, steady conception of an object, than what the imagination alone is ever able to attain. | |
From: David Hume (Enquiry Conc Human Understanding [1748], V.II.40) |
2207 | Belief can't be a concept plus an idea, or we could add the idea to fictions [Hume] |
Full Idea: What is the difference between fiction and belief? It can't be a peculiar idea annexed to a conception which commands our assent, and is wanting to fiction, for then the mind could voluntarily annex this idea to any fiction, and believe what it pleases. | |
From: David Hume (Enquiry Conc Human Understanding [1748], V.II.39) |
2208 | Belief is just a particular feeling attached to ideas of objects [Hume] |
Full Idea: When an object is present to memory or senses, custom carries the imagination to that object which is usually conjoined with it. This carries a feeling different from the loose reveries of fantasy, and in this consists the whole nature of belief. | |
From: David Hume (Enquiry Conc Human Understanding [1748], V.II.39) |
2213 | Beliefs are built up by resemblance, contiguity and causation [Hume] |
Full Idea: Belief, where it reaches beyond the memory or senses, arises from resemblance, contiguity or causation, with the same transition of thought and vivacity of conception. | |
From: David Hume (Enquiry Conc Human Understanding [1748], V.II.44) |
3661 | 'Natural beliefs' are unavoidable, whatever our judgements [Hume, by Strawson,G] |
Full Idea: Hume has a doctrine of "natural belief", about the sorts of things we can't help believing, in 'common' or everyday life, irrespective of our philosophical conclusions. | |
From: report of David Hume (Enquiry Conc Human Understanding [1748]) by Galen Strawson - The Secret Connexion App C |
2191 | Relations of ideas are known by thought, independently from the world [Hume] |
Full Idea: Relations of Ideas are discoverable by the mere operation of thought, without dependence on what is anywhere existent in the universe. | |
From: David Hume (Enquiry Conc Human Understanding [1748], IV.I.20) |
2239 | If secondary qualities (e.g. hardness) are in the mind, so are primary qualities like extension [Hume] |
Full Idea: It is agreed that all sensible qualities of objects, such as hard or hot, are secondary, and exist in the mind and not in objects; but then this also follows for the primary qualities of extension and solidity. | |
From: David Hume (Enquiry Conc Human Understanding [1748], XII.I.122) | |
A reaction: he mentions Berkeley |
2237 | It never occurs to people that they only experience representations, not the real objects [Hume] |
Full Idea: Men instinctively suppose the very images presented by the senses to be the external objects, and never entertain any suspicion that the one is nothing but representations of the other. | |
From: David Hume (Enquiry Conc Human Understanding [1748], XII.I.117) |
2192 | All reasoning about facts is causal; nothing else goes beyond memory and senses [Hume] |
Full Idea: All reasonings concerning matters of fact seem to be founded on the relation of cause and effect. By means of that relation alone we can go beyond of our memory and senses. | |
From: David Hume (Enquiry Conc Human Understanding [1748], IV.I.22) |
2184 | All ideas are copies of impressions [Hume] |
Full Idea: All our ideas or more feeble perceptions are copies of our impressions or more lively ones. | |
From: David Hume (Enquiry Conc Human Understanding [1748], II.13) |
23631 | Hume is loose when he says perceptions of different strength are different species [Reid on Hume] |
Full Idea: When Hume divides all perceptions into two classes or species, distinguished by their degrees of force and vivacity, this is loose and unphilosophical. To differ in species is one thing, to differ in degree is another. | |
From: comment on David Hume (Enquiry Conc Human Understanding [1748], II.12) by Thomas Reid - Essays on Intellectual Powers 1: Preliminary 1 | |
A reaction: This is Hume's 'impressions' and 'ideas'. As usual with Reid, this is a very astute criticism. Reid is a direct realist, so his solution is to view ideas as weakened impressions. If impressions are strong ideas, you get idealism (which is bad!). |
2182 | Impressions are our livelier perceptions, Ideas the less lively ones [Hume] |
Full Idea: 'Impressions' are our more lively perceptions, when we hear, see, feel, love, hate, desire or will. 'Ideas' are less lively perceptions, when we reflect on any of those sensations or movements. | |
From: David Hume (Enquiry Conc Human Understanding [1748], II.12) |
2190 | All objects of enquiry are Relations of Ideas, or Matters of Fact [Hume] |
Full Idea: All objects of human reason or enquiry may naturally be divided into two kinds, to wit, Relations of Ideas, and Matters of Fact. | |
From: David Hume (Enquiry Conc Human Understanding [1748], IV.I.20) |
2246 | If books don't relate ideas or explain facts, commit them to the flames [Hume] |
Full Idea: If we take in hand any volume of divinity or metaphysics, ask 'Does it contain any abstract reasoning concerning quantity or number?' No. 'Or experimental reason on matters of fact and existence?' No. Commit it then to the flames. | |
From: David Hume (Enquiry Conc Human Understanding [1748], XII.III.132) |
2189 | All ideas are connected by Resemblance, Contiguity in time or place, and Cause and Effect [Hume] |
Full Idea: To me, there appear to be only three principles of connection between ideas, namely, Resemblance, Contiguity in time or place, and Cause or Effect. | |
From: David Hume (Enquiry Conc Human Understanding [1748], III.19) |
2186 | We cannot form the idea of something we haven't experienced [Hume] |
Full Idea: A blind man can form no notion of colours; a deaf man of sounds. ….A Laplander or Negro has no notion of the relish of wine. ….A man of mild manners can form no idea of inveterate revenge or cruelty. | |
From: David Hume (Enquiry Conc Human Understanding [1748], II.15) |
2702 | Only madmen dispute the authority of experience [Hume] |
Full Idea: None but a fool or a madman will ever pretend to dispute the authority of experience. | |
From: David Hume (Enquiry Conc Human Understanding [1748], IV.II.31) |
2217 | When definitions are pushed to the limit, only experience can make them precise [Hume] |
Full Idea: When we have pushed up definitions to the most simple ideas and still find some ambiguity and obscurity, how can we render them altogether precise and determinate? Produce the impressions or original sentiments from which the ideas were copied. | |
From: David Hume (Enquiry Conc Human Understanding [1748], VII.I.49) |
2194 | How could Adam predict he would drown in water or burn in fire? [Hume] |
Full Idea: Adam, though his rational faculties be supposed, at the very first, entirely perfect, could not have inferred from the fluidity and transparency of water, that it would suffocate him, or from the light and warmth of fire that it would consume him. | |
From: David Hume (Enquiry Conc Human Understanding [1748], IV.I.23) |
2183 | We can only invent a golden mountain by combining experiences [Hume] |
Full Idea: The creative power of the mind amounts to no more than the faculty of compounding, transposing, augmenting or diminishing the materials afforded us by the sense or experience. For example, a golden mountain or a virtuous horse come from joining ideas. | |
From: David Hume (Enquiry Conc Human Understanding [1748], II.13) | |
A reaction: The example of the Golden Mountain comes from Aguinas Quodlibeta 8.2.1. The original idea is in Sextus Empiricus. |
2205 | You couldn't reason at all if you lacked experience [Hume] |
Full Idea: An unexperienced reasoner could be no reasoner at all, were he absolutely unexperienced. | |
From: David Hume (Enquiry Conc Human Understanding [1748], V.I.36 n.1) |
3902 | Hume mistakenly lumps sensations and perceptions together as 'impressions' [Scruton on Hume] |
Full Idea: The greatest weakness in Hume's philosophy is his use of the term 'impression' to refer to both sensations and perceptions. | |
From: comment on David Hume (Enquiry Conc Human Understanding [1748]) by Roger Scruton - Modern Philosophy:introduction and survey 24 |
23421 | If a person had a gap in their experience of blue shades, they could imaginatively fill it in [Hume] |
Full Idea: Suppose a person to be perfectly acquainted with all colours, except one particular shade of blue. It must be possible for him to raise up from his own imagination the idea of that particular shade, though never conveyed to him by the senses. | |
From: David Hume (Enquiry Conc Human Understanding [1748], II.16) | |
A reaction: [compressed] He dismisses this as 'so singular it is scarcely worth observing', but it is crucial. It isn't 'singular'. We do it all the time, by extrapolating from experiences and interpolating between them. Thus we extend knowledge beyond experience. |
2206 | Reasons for belief must eventually terminate in experience, or they are without foundation [Hume] |
Full Idea: If I ask why you believe some fact, you must tell me a reason, which will be some other fact, connected with it. But this process must terminate in a fact which is present to your memory or senses; or you must allow that the belief is without foundation. | |
From: David Hume (Enquiry Conc Human Understanding [1748], V.I.37) | |
A reaction: A classic quotation of empirical foundationalism. The rival view would be that the process does not terminate at all, but nevertheless builds up a persuasive picture which is foundational. |
2235 | There is no certain supreme principle, or infallible rule of inference [Hume] |
Full Idea: There is no original supreme principle that is self-evident and convincing; nor, if there were, could we advance a step beyond it, but by those very faculties of which sceptics are supposed to be already diffident. | |
From: David Hume (Enquiry Conc Human Understanding [1748], XII.I.116) | |
A reaction: This I take to be the chief exponent of empirical foundationalism attacking rational foundationalism. The problem of 'advancing beyond' basic beliefs is also a problem for Hume's position. |
10328 | We think testimony matches reality because of experience, not some a priori connection [Hume] |
Full Idea: The reason why we place any credit in witnesses and historians, is not derived from any connexion, which we perceive a priori, between testimony and reality, but because we are accustomed to find a conformity between them. | |
From: David Hume (Enquiry Conc Human Understanding [1748], X.i.89) | |
A reaction: Well he would say that, wouldn't he? If there is no connection in testimony, presumably there can be no a priori connection with private experience, but there is a danger of never getting started, and ending in anti-realism. |
2230 | Good testimony needs education, integrity, motive and agreement [Hume, by PG] |
Full Idea: Reliable testimony needs a good number of educated people, all of undoubted integrity, who have a lot to lose if they are caught lying, reporting very public events. | |
From: report of David Hume (Enquiry Conc Human Understanding [1748], X.II.92) by PG - Db (ideas) | |
A reaction: A nice checklist for flying saucer sightings etc: education, integrity, lying risky, very public. If any of those fail, it comes down to likelihood (apply Bayes?) and character assessment. |
2238 | Reason can never show that experiences are connected to external objects [Hume] |
Full Idea: Reason can never find any convincing argument from experience to prove that perceptions are connected with any external objects. | |
From: David Hume (Enquiry Conc Human Understanding [1748], XII.I.121) |
2242 | Mitigated scepticism draws attention to the limitations of human reason, and encourages modesty [Hume] |
Full Idea: A mitigated scepticism … can make dogmatical reasoners become sensible of the strange infirmities of human understanding, and inspire them with more modesty and reserve. | |
From: David Hume (Enquiry Conc Human Understanding [1748], XII.III.129) |
2243 | Mitigated scepticism sensibly confines our enquiries to the narrow capacity of human understanding [Hume] |
Full Idea: Mitigated scepticism is an advantage to mankind, as it limits our enquiries to such subjects as are best adapted to the narrow capacity of human understanding. | |
From: David Hume (Enquiry Conc Human Understanding [1748], XII.III.130) |
2236 | Examples of illusion only show that sense experience needs correction by reason [Hume] |
Full Idea: Trite sceptical examples, such as the oar bent in water, or double images when the eye is pressed, are only sufficient to prove that senses alone are not dependable, but we must correct their evidence with reason. | |
From: David Hume (Enquiry Conc Human Understanding [1748], XII.I.117) |
2241 | The main objection to scepticism is that no good can come of it [Hume] |
Full Idea: The chief and most confounding objection to excessive scepticism is that no durable good can ever result from it. | |
From: David Hume (Enquiry Conc Human Understanding [1748], XII.II.128) |
2240 | It is a very extravagant aim of the sceptics to destroy reason and argument by means of reason and argument [Hume] |
Full Idea: It may seem a very extravagant attempt of the sceptics to destroy reason by argument and ratiocination; yet is this the grand scope of all their enquiries and disputes. | |
From: David Hume (Enquiry Conc Human Understanding [1748], XII.II.124) |
2198 | We assume similar secret powers behind similar experiences, such as the nourishment of bread [Hume] |
Full Idea: We always presume, when we see like sensible qualities, that they have like secret powers, and expect that effects, similar to those which we have experienced, will follow from them. …Thus, we expect bread to nourish us, from previous experience. | |
From: David Hume (Enquiry Conc Human Understanding [1748], IV.II.29) |
2201 | Induction can't prove that the future will be like the past, since induction assumes this [Hume] |
Full Idea: It is impossible that any arguments from experience can prove the resemblance of the past to the future, since all these arguments are founded on the supposition of this resemblance. | |
From: David Hume (Enquiry Conc Human Understanding [1748], IV.II.32) |
2203 | If we infer causes from repetition, this explains why we infer from a thousand objects what we couldn't infer from one [Hume] |
Full Idea: If after the constant conjunction of two objects (e.g. heat and flame) we are determined by custom alone to expect the one from the appearance of the other,this explains why we can draw an inference from a thousand objects which we couldn't draw from one. | |
From: David Hume (Enquiry Conc Human Understanding [1748], V.I.36) | |
A reaction: This is Hume's best statement of the problem of the difficulty of demonstration the logic of induction. |
2199 | Reason cannot show why reliable past experience should extend to future times and remote places [Hume] |
Full Idea: The main question on which I would insist is why reliable past experience should be extended to future times, and to other objects, which for ought we know, may be only in appearance similar. …No reasoning can show this. | |
From: David Hume (Enquiry Conc Human Understanding [1748], IV.II.30) |
2202 | Fools, children and animals all learn from experience [Hume] |
Full Idea: It is certain that the most ignorant and stupid peasants - nay infants, nay even brute beasts - improve by experience. | |
From: David Hume (Enquiry Conc Human Understanding [1748], IV.II.33) |
2204 | All inferences from experience are effects of custom, not reasoning [Hume] |
Full Idea: All inferences from experience are effects of custom, not reasoning. | |
From: David Hume (Enquiry Conc Human Understanding [1748], V.I.36) |
6350 | Premises can support an argument without entailing it [Pollock/Cruz on Hume] |
Full Idea: Contrary to what Hume supposed, it must be possible for the premises of an argument to support a conclusion without logically entailing it. | |
From: comment on David Hume (Enquiry Conc Human Understanding [1748]) by J Pollock / J Cruz - Contemporary theories of Knowledge (2nd) §1.2 | |
A reaction: This seems to me an extremely important point, made with nice clarity. It is why people who are good at logic are not necessarily good at philosophy. The latter is about thinking rationally, not following the laws of deduction. |
3598 | Hume just shows induction isn't deduction [Williams,M on Hume] |
Full Idea: All that Hume has really shown with his argument is that induction is not deduction. | |
From: comment on David Hume (Enquiry Conc Human Understanding [1748], IV.II.29) by Michael Williams - Problems of Knowledge Ch.18 |
17085 | A good explanation totally rules out the opposite explanation (so Forms are required) [Plato, by Ruben] |
Full Idea: For Plato, an acceptable explanation is one such that there is no possibility of there being the opposite explanation at all, and he thought that only explanations in terms of the Forms, but never physical explanations, could meet this requirement. | |
From: report of Plato (works [c.375 BCE]) by David-Hillel Ruben - Explaining Explanation Ch 2 | |
A reaction: [Republic 436c is cited] |
2210 | A picture of a friend strengthens our idea of him, by resemblance [Hume] |
Full Idea: Upon the appearance of the picture of an absent friend, our idea of him is evidently enlivened by the resemblance. | |
From: David Hume (Enquiry Conc Human Understanding [1748], V.II.41) |
17712 | General ideas are the connection by resemblance to some particular [Hume] |
Full Idea: All general ideas are nothing but particular ones, annexed to a certain term, which gives them a more extensive signification, and makes them recall upon occasion other individuals, which are similar to them. | |
From: David Hume (Enquiry Conc Human Understanding [1748], I.VII.17), quoted by Edwin D. Mares - A Priori 08.2 | |
A reaction: This is close to Berkeley's idea that we can only grasp particulars. Personally I think the idea of (psychological) abstraction is unavoidable. Irrelevant features of particulars need to ignored. |
8544 | Hume does not distinguish real resemblances among degrees of resemblance [Shoemaker on Hume] |
Full Idea: Hume regarded the notion of resemblance as unproblematic, ..but any two objects share infinitely many Cambridge (whimsical relational) properties, and resemble in infinite ways. He needs real resemblance, which needs degrees of resemblance. | |
From: comment on David Hume (Enquiry Conc Human Understanding [1748], V.II.41) by Sydney Shoemaker - Causality and Properties §2 | |
A reaction: [compressed] See Idea 191. We forgive Hume, because he is a pioneer, but this is obviously right. Draw a line between 'real' resemblances and rest will be tricky, and bad news for regularity accounts of laws and causation. |
2211 | When I am close to (contiguous with) home, I feel its presence more nearly [Hume] |
Full Idea: When I am a few miles from home, whatever relates to it touches me more nearly than when I am two hundred leagues distance. | |
From: David Hume (Enquiry Conc Human Understanding [1748], V.II.42) |
2212 | An object made by a saint is the best way to produce thoughts of him [Hume] |
Full Idea: One of the best reliques which a devotee could procure would be the handiwork of a saint, because they were once at his disposal, and were moved and affected by him. | |
From: David Hume (Enquiry Conc Human Understanding [1748], V.II.43) |
2214 | Our awareness of patterns of causation is too important to be left to slow and uncertain reasoning [Hume] |
Full Idea: Our inference of like effects from like causes is so essential to the subsistence of human creatures that it is unlikely to be trusted to the fallacious deductions of reasoning, which are slow, develop late, and are liable to error. | |
From: David Hume (Enquiry Conc Human Understanding [1748], V.II.45) |
2222 | The doctrine of free will arises from a false sensation we have of freedom in many actions [Hume] |
Full Idea: The prevalence of the doctrine of liberty may be accounted for from a false sensation or seeming experience which we have, or may have, of liberty or indifference, in many of our actions. | |
From: David Hume (Enquiry Conc Human Understanding [1748], VIII.I.72) |
2223 | Liberty is merely acting according to the will, which anyone can do if they are not in chains [Hume] |
Full Idea: By liberty we can only mean a power of acting or not acting according to the determinations of the will, …which is universally allowed to everyone who is not a prisoner and in chains. | |
From: David Hume (Enquiry Conc Human Understanding [1748], VIII.I.73) |
3655 | Hume makes determinism less rigid by removing the necessity from causation [Trusted on Hume] |
Full Idea: Hume's account of the causal relation makes determinism less rigid because there is no longer a logical necessity in the succession of events. | |
From: comment on David Hume (Enquiry Conc Human Understanding [1748], VIII.II.75) by Jennifer Trusted - Free Will and Responsibility Ch.4 |
23221 | The brain, and all the mental events within it, consists entirely of sensitive and rational matter [Cavendish] |
Full Idea: Sensitive and rational matter …makes not only the Brain, but all Thoughts, Conceptions, Imaginations, Fancy, Understanding, Memory, Remembrance, and whatsoever motions are in the Head or Brain. | |
From: Margaret Cavendish (Philosophical Letters [1664], p.185), quoted by Matthew Cobb - The Idea of the Brain 2 | |
A reaction: Judging by the date of this, and that she is a Cavendish, the influence of Hobbes must be strong, which was brave in 1664. A very strong statement of reductive physicalism, making sure that nothing is left out. |
1651 | Plato wanted to somehow control and purify the passions [Vlastos on Plato] |
Full Idea: Plato put high on his agenda a project which did not figure in Socrates' programme at all: the hygienic conditioning of the passions. This cannot be an intellectual process, as argument cannot touch them. | |
From: comment on Plato (works [c.375 BCE]) by Gregory Vlastos - Socrates: Ironist and Moral Philosopher p.88 | |
A reaction: This is the standard traditional view of any thinker who exaggerates the importance and potential of reason in our lives. |
3324 | Plato's whole philosophy may be based on being duped by reification - a figure of speech [Benardete,JA on Plato] |
Full Idea: Plato is liable to the charge of having been duped by a figure of speech, albeit the most profound of all, the trope of reification. | |
From: comment on Plato (works [c.375 BCE]) by José A. Benardete - Metaphysics: the logical approach Ch.12 | |
A reaction: That might be a plausible account if his view was ridiculous, but given how many powerful friends Plato has, especially in the philosophy of mathematics, we should assume he was cleverer than that. |
2220 | Only experience teaches us about our wills [Hume] |
Full Idea: We learn the influence of our will from experience alone. | |
From: David Hume (Enquiry Conc Human Understanding [1748], VII.I.52) | |
A reaction: I can, of course, produce inductive generalisations about what my will can achieve, based on some limited experiences. "I know I can master that". Hobbes (and others) say we have no experience of a 'will'. Hume should be more sceptical! |
2224 | Praise and blame can only be given if an action proceeds from a person's character and disposition [Hume] |
Full Idea: Where actions proceed not from some cause in the character and disposition of the person who performed them, they can neither redound to his honour, if good, nor his infamy, if evil. | |
From: David Hume (Enquiry Conc Human Understanding [1748], VIII.I.76) |
2225 | If you deny all necessity and causation, then our character is not responsible for our crime [Hume] |
Full Idea: According to the principle which denies necessity, and consequently causes, a man is pure and unattainted after having committed the most horrid of crimes, since his actions are not derived from his character. | |
From: David Hume (Enquiry Conc Human Understanding [1748], VIII.I.76) | |
A reaction: The idea that responsibility involves actions which are 'derived from his character' strikes me as good. Once you give up free will, it is almost the only sensible way to go. |
2226 | Repentance gets rid of guilt, which shows that responsibility arose from the criminal principles in the mind [Hume] |
Full Idea: Repentance and reformation can wipe off every crime, but that is because criminal acts prove criminal principles in the mind, so alteration of these principles removes that proof, and the acts cease to be criminal. | |
From: David Hume (Enquiry Conc Human Understanding [1748], VIII.I.76) | |
A reaction: A bit overstated, because a heinous crime will always taint our impression of someone's character. The person may cease to be criminal, but surely not the original acts? |
7503 | Plato never refers to examining the conscience [Plato, by Foucault] |
Full Idea: Plato never speaks of the examination of conscience - never! | |
From: report of Plato (works [c.375 BCE]) by Michel Foucault - On the Genealogy of Ethics p.276 | |
A reaction: Plato does imply some sort of self-evident direct knowledge about that nature of a healthy soul. Presumably the full-blown concept of conscience is something given from outside, from God. In 'Euthyphro', Plato asserts the primacy of morality (Idea 337). |
2173 | As religion and convention collapsed, Plato sought morals not just in knowledge, but in the soul [Williams,B on Plato] |
Full Idea: Once gods and fate and social expectation were no longer there, Plato felt it necessary to discover ethics inside human nature, not just as ethical knowledge (Socrates' view), but in the structure of the soul. | |
From: comment on Plato (works [c.375 BCE]) by Bernard Williams - Shame and Necessity II - p.43 | |
A reaction: anti Charles Taylor |
9274 | Plato's legacy to European thought was the Good, the Beautiful and the True [Plato, by Gray] |
Full Idea: Plato's legacy to European thought was a trio of capital letters - the Good, the Beautiful and the True. | |
From: report of Plato (works [c.375 BCE]) by John Gray - Straw Dogs 2.8 | |
A reaction: It seems to have been Baumgarten who turned this into a slogan (Idea 8117). Gray says these ideals are lethal, but I identify with them very strongly, and am quite happy to see the good life as an attempt to find the right balance between them. |
94 | Pleasure is better with the addition of intelligence, so pleasure is not the good [Plato, by Aristotle] |
Full Idea: Plato says the life of pleasure is more desirable with the addition of intelligence, and if the combination is better, pleasure is not the good. | |
From: report of Plato (works [c.375 BCE]) by Aristotle - Nicomachean Ethics 1172b27 | |
A reaction: It is obvious why we like pleasure, but not why intelligence makes it 'better'. Maybe it is just because we enjoy intelligence? |
17947 | Plato decided that the virtuous and happy life was the philosophical life [Plato, by Nehamas] |
Full Idea: Plato came to the conclusion that virtue and happiness consist in the life of philosophy itself. | |
From: report of Plato (works [c.375 BCE]) by Alexander Nehamas - Eristic,Antilogic,Sophistic,Dialectic p.117 | |
A reaction: This view is obviously ridiculous, because it largely excludes almost the entire human race, which sees philosophy as a cul-de-sac, even if it is good. But virtue and happiness need some serious thought. |
6015 | Plato, unusually, said that theoretical and practical wisdom are inseparable [Plato, by Kraut] |
Full Idea: Two virtues that are ordinarily kept distinct - theoretical and practical wisdom - are joined by Plato; he thinks that neither one can be fully possessed unless it is combined with the other. | |
From: report of Plato (works [c.375 BCE]) by Richard Kraut - Plato | |
A reaction: I get the impression that this doctrine comes from Socrates, whose position is widely reported as 'intellectualist'. Aristotle certainly held the opposite view. |
2912 | Plato is boring [Nietzsche on Plato] |
Full Idea: Plato is boring. | |
From: comment on Plato (works [c.375 BCE]) by Friedrich Nietzsche - Twilight of the Idols 9.2 |
2233 | No government has ever suffered by being too tolerant of philosophy [Hume] |
Full Idea: A state ought to tolerate every principle of philosophy, nor is there any instance that a government has suffered in its political interests by such indulgence. | |
From: David Hume (Enquiry Conc Human Understanding [1748], XI.114) |
2195 | We can discover some laws of nature, but never its ultimate principles and causes [Hume] |
Full Idea: The ultimate springs and principles are totally shut up from human enquiry. Elasticity, gravity, cohesion of parts, communication of motion by impulse; these are probably the ultimate causes and principles which we shall ever discover in nature. | |
From: David Hume (Enquiry Conc Human Understanding [1748], IV.I.26) |
2245 | A priori it looks as if a cause could have absolutely any effect [Hume] |
Full Idea: If we just reason a priori, anything may appear able to produce anything. The falling of a pebble may, for aught we know, extinguish the sun. | |
From: David Hume (Enquiry Conc Human Understanding [1748], XII.III.132) |
4772 | If a singular effect is studied, its cause can only be inferred from the types of events involved [Hume] |
Full Idea: Only when two species of objects are constantly conjoined can we infer one from the other; were an entirely singular effect presented, which could not be comprehended under a species, I do not see that we could form any conjecture concerning its cause. | |
From: David Hume (Enquiry Conc Human Understanding [1748], XI.115) | |
A reaction: A key issue in causation. Note that Hume is willing to discuss causation in a freakishly unique happening, but only if he can spot a 'type' in the each of the events. I don't like it, but the man has a good point… |
8341 | Hume never even suggests that there is no such thing as causation [Hume, by Strawson,G] |
Full Idea: At no point (in Sect VII of 'Enquiries') does Hume even hint at the thesis that there is (or even might be) no such thing as causation. | |
From: report of David Hume (Enquiry Conc Human Understanding [1748], VII) by Galen Strawson - The Secret Connexion 21.3 | |
A reaction: If, as some people think, Hume is a phenomenalist, then we wouldn't expect him to actually deny the existence of such things. The standard position (cf. Ayer on religion) is that such things are not even worth mentioning. |
8344 | At first Hume said qualities are the causal entities, but later he said events [Hume, by Davidson] |
Full Idea: In the Enquiries Hume clearly suggests that causes and effects are entities that can be named or described by singular terms; probably events, since one can follow another; but in the Treatise it seems to be the quality or circumstance which is the cause. | |
From: report of David Hume (Enquiry Conc Human Understanding [1748]) by Donald Davidson - Causal Relations §1 | |
A reaction: A quality would have to have an associated power if it was going to trigger an effect. But then so would an event (unless inertia carried across?). Qualities are more distinct. Events can last for years. |
3662 | Hume says we can only know constant conjunctions, not that that's what causation IS [Hume, by Strawson,G] |
Full Idea: Hume's regularity theory of causation is only a theory about causation so far as we can know about it or contentfully conceive of it in the objects, not about causation as it is in the objects. | |
From: report of David Hume (Enquiry Conc Human Understanding [1748], IV.I) by Galen Strawson - The Secret Connexion App C |
4771 | In both of Hume's definitions, causation is extrinsic to the sequence of events [Psillos on Hume] |
Full Idea: What needs to be stressed is that in both of Hume's definitions of cause, an individual sequence of events is deemed causal only because something extrinsic to the sequence occurs (be it conjunctions, or a mental link). | |
From: comment on David Hume (Enquiry Conc Human Understanding [1748], VII.II.60) by Stathis Psillos - Causation and Explanation §1.9 | |
A reaction: Simple but important. Hume's basic claim is that there is no 'causation' in events, apart from the events themselves. Hence no necessity, on top of the apparent contingency. |
5194 | Hume's definition of cause as constantly joined thoughts can't cover undiscovered laws [Ayer on Hume] |
Full Idea: Hume's second definition of cause (one object always 'conveys the thought' of another) implies that it is inconceivable that there should be causal laws which have never yet been thought of, and this is not so. | |
From: comment on David Hume (Enquiry Conc Human Understanding [1748], VII.II.60) by A.J. Ayer - Language,Truth and Logic Ch.2 | |
A reaction: This appears to be a good criticism of Hume, but also a bit of a problem for a strong empiricist like Ayer. There may also be causal laws which we cannot discover, but logical positivism will not allow me to speculate about that. |
2221 | A cause is either similar events following one another, or an experience always suggesting a second experience [Hume] |
Full Idea: A cause is an object, followed by another, and where all the objects similar to the first are followed by objects similar to the second, or, an object followed by another, and whose appearance always conveys the thought to that other. | |
From: David Hume (Enquiry Conc Human Understanding [1748], VII.II.60) |
2234 | It is only when two species of thing are constantly conjoined that we can infer one from the other [Hume] |
Full Idea: It is only when two species of object are found to be constantly conjoined, that we can infer the one from the other. | |
From: David Hume (Enquiry Conc Human Understanding [1748], XI.115) | |
A reaction: what is a species? |
2193 | No causes can be known a priori, but only from experience of constant conjunctions [Hume] |
Full Idea: Without exception, knowledge of cause and effect is not attained by reasonings a priori, but arises entirely from experience, when we find that any particular objects are constantly conjoined with each other. | |
From: David Hume (Enquiry Conc Human Understanding [1748], IV.I.23) |
8422 | Cause is where if the first object had not been, the second had not existed [Hume] |
Full Idea: We may define a cause to be where .....if the first object had not been, the second never had existed. | |
From: David Hume (Enquiry Conc Human Understanding [1748], 7.2.60) | |
A reaction: This is Hume's second definition, cited by Lewis as the ancestor of his counterfactual theory. It feels all wrong to me. 'If there had been no window, there would have been no window-breakage'? |
2218 | In observing causes we can never observe any necessary connections or binding qualities [Hume] |
Full Idea: When we look towards external objects, and consider the operation of causes, we are never able to discover any power or necessary connexion, any quality which binds the effect to the cause. | |
From: David Hume (Enquiry Conc Human Understanding [1748], VII.I.50) |
15249 | Hume never shows how a strong habit could generate the concept of necessity [Harré/Madden on Hume] |
Full Idea: Hume's contemporary critics are correct. He never really shows how it is possible for a habit, however strong it may be, to generate the concept of necessity. | |
From: comment on David Hume (Enquiry Conc Human Understanding [1748]) by Harré,R./Madden,E.H. - Causal Powers 3.II | |
A reaction: This is a powerful objection which hadn't occurred to me. Presumably eighteenth century critics are referred to? I suppose if a necessity is what 'cannot be otherwise', a very deeply ingrained habit might seem that way - but in me, not in the world. |
8339 | Hume's regularity theory of causation is epistemological; he believed in some sort of natural necessity [Hume, by Strawson,G] |
Full Idea: Hume's Regularity theory of causation is about causation as we know about it or contentfully conceive of it in the objects. As far as causation as it is in the objects is concerned, Hume firmly believed in some sort of natural necessity or causal power. | |
From: report of David Hume (Enquiry Conc Human Understanding [1748]) by Galen Strawson - The Secret Connexion App C | |
A reaction: Strawson's controversial reinterpretation of Hume. We are confusing his epistemology with his ontology. Hume is simply being sceptical about our ability to bridge the gap to achieve understanding of natural necessity. A very different view of Hume. |
1526 | Almost everyone except Plato thinks that time could not have been generated [Plato, by Aristotle] |
Full Idea: With a single exception (Plato) everyone agrees about time - that it is not generated. Democritus says time is an obvious example of something not generated. | |
From: report of Plato (works [c.375 BCE]) by Aristotle - Physics 251b14 |
2244 | It can never be a logical contradiction to assert the non-existence of something thought to exist [Hume] |
Full Idea: Whatever 'is' may 'not be'. No negation of a fact can involve a contradiction. The non-existence of any being, without exception, is as clear and distinct an idea as its existence. | |
From: David Hume (Enquiry Conc Human Understanding [1748], XII.III.132) |
2232 | You can't infer the cause to be any greater than its effect [Hume] |
Full Idea: If we infer a cause from an effect, we must proportion the one to the other. …a body of ten ounces raised in a scale proves the counterbalance exceeds ten ounces, but not that it exceeds a hundred. | |
From: David Hume (Enquiry Conc Human Understanding [1748], XI.105) |
2227 | A miracle violates laws which have been established by continuous unchanging experience, so should be ignored [Hume] |
Full Idea: A miracle is a violation of the laws of nature, and as a firm and unalterable experience has established these laws, the proof against a miracle is as entire as any argument from experience can possible be imagined. | |
From: David Hume (Enquiry Conc Human Understanding [1748], X.I.90) |
2228 | All experience must be against a supposed miracle, or it wouldn't be called 'a miracle' [Hume] |
Full Idea: There must be a uniform experience against every miraculous event, otherwise the event would not merit that appellation. | |
From: David Hume (Enquiry Conc Human Understanding [1748], X.I.90) |
2229 | To establish a miracle the falseness of the evidence must be a greater miracle than the claimed miraculous event [Hume] |
Full Idea: No testimony is sufficient to establish a miracle, unless the testimony be of such a kind that its falsehood would be more miraculous than the fact which it endeavours to establish. | |
From: David Hume (Enquiry Conc Human Understanding [1748], X.I.91) |
2185 | The idea of an infinite, intelligent, wise and good God arises from augmenting the best qualities of our own minds [Hume] |
Full Idea: The idea of God, as meaning an infinitely intelligent, wise and good being, arises from reflecting on the operations of our own mind, and augmenting, without limit, those qualities of goodness and wisdom. | |
From: David Hume (Enquiry Conc Human Understanding [1748], II.14) |